CN101942842B - Composite geomembrane anti-seepage construction splicing method - Google Patents
Composite geomembrane anti-seepage construction splicing method Download PDFInfo
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- CN101942842B CN101942842B CN201010269248XA CN201010269248A CN101942842B CN 101942842 B CN101942842 B CN 101942842B CN 201010269248X A CN201010269248X A CN 201010269248XA CN 201010269248 A CN201010269248 A CN 201010269248A CN 101942842 B CN101942842 B CN 101942842B
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Abstract
The invention belongs to the technical field of seepage control and discloses a composite geomembrane anti-seepage construction splicing method. The method comprises the following steps of: removing a non-woven fabric on the surface of a composite geomembrane to be spliced so as to expose membrane surfaces; coating an adhesive between the two membrane surfaces to be spliced and on the parts of the two membrane surfaces to be spliced respectively, wherein the parts are extented to corresponding parent materials for no less than 1.5cm; and pressurizing to bond the membrane surfaces. The method has the advantages that: (1) the non-woven fabric on the surface of a connected edge is removed by using an angle grinder to drive a circular steel brush or a steel wire wheel with good effect and high efficiency; (2) after the non-woven fabric on the surface of the connected edge is removed, the adhesive is facilitated to permeate onto the surface of the membrane, and after bonding, the adhesive cannot permeate into a passage, so that the anti-seepage effect is improved and the dosage of the adhesive is reduced; (3) the bonded surfaces are extented to the parent material for no less than 1.5cm, so that the part with the weak strength of the connected edge is eliminated and the bonding shear strength of the connected edge is the same as the strength of the parent material; and (4) the method is suitable for laying irregular shapes and repairing the defects of the composite geomembrane during composite geomembrane anti-seepage construction.
Description
Technical field
The invention belongs to the seepage control technique field, be specifically related to a kind of impermeable composite geomembrane construction joining method.
Background technology
Composite geo-membrane has been widely used in all kinds of seepage control projects at present.Wherein, the polyvinyl composite geo-membrane is because light weight, intensity height, avirulence, advantage such as inexpensive, and more selected for use.The polyvinyl composite geo-membrane adopts thermocouple more and drenches the production of film composite algorithm, and factory reserves the construction edge fit, and the polyethylene film at edge fit place separates with nonwoven, and polyethylene film can weld or be bonding.
In the construction of complicated shape impermeable composite geomembrane was laid, it was limited that factory reserves edge fit, often was difficult to satisfy the needs of the on-the-spot splicing of composite geo-membrane; Lack the composite geo-membrane of reserving edge fit when splicing, the permeable nonwoven layer on edge fit surface combines with film closely, is difficult to removing; Can't weld, the bonding back of gluing is prone to form leakage passage, and anti-seepage effect is undesirable; And speed of application is slow, wastes a large amount of bonding adhesive.
Present splicing is difficult to satisfy the needs that lack the impermeable composite geomembrane construction technology of reserving edge fit.
Summary of the invention
The technical problem that the present invention will solve is exactly the deficiency that overcomes prior art, provides that a kind of speed of application is fast, the impermeable composite geomembrane of good seepage-proof property construction joining method.
For realizing above-mentioned purpose, the technical scheme that the present invention takes is:
A kind of impermeable composite geomembrane construction joining method: the nonwoven of removing composite geo-membrane to be spliced surface; Expose face; Respectively between two faces to be spliced and two faces to be spliced extend the position coating adhesive that is no less than 1.5cm, pressurized adhesion to corresponding mother metal.
Adopt angle grinding machine drive round steel brush or wire wheel to remove the nonwoven on composite geo-membrane to be spliced surface.
Nonwoven to the nonwoven residual volume of removing composite geo-membrane to be spliced surface is not more than 80g/m
2, promptly every m
2The nonwoven residual volume on composite geo-membrane surface is not more than 80g, and the nonwoven residual volume should lack as much as possible, and nonwoven residual volume adhesive effect less is good more, and anti-seepage effect is good more.
During coating adhesive, the splicing width of controlling between the two smooth films is not less than 5cm between two faces to be spliced.
Take into account and improve splicing intensity, anti-seepage effect and reduction construction cost, the preferred 5～10cm of splicing width between the two smooth films.
Based on improving splicing intensity and reducing construction cost, two faces to be spliced preferably extend 1.5～5cm to corresponding mother metal, and promptly the splicing width between two faces extends 1.5～5cm to corresponding mother metal.
Composite geo-membrane is the polyvinyl composite geo-membrane.
Composite geo-membrane is two cloth, one membranous types.
Pressurization is to beat or tramp with one's feet or pressurize with sandbag with rubber hammer.
Bonding adhesive is liquid-type bonding adhesive or hot-melt adhesive, and these bonding adhesive can be selected in bonding adhesive scope commonly used as well known to those skilled in the art.The geomembrane glue that Chengdu Zhengguang Adhesive Co., Ltd's production is arranged as the object lesson of liquid-type bonding adhesive; The KS hot melt adhesive that the production of Henan water engineering material Co., Ltd is arranged as solid thermal melten gel type.Secondly, the present invention does not limit the thickness of glue-line after the coating adhesive is also special, as long as be coated with evenly, and can be according to the thickness operation of the conventional bonding glue-line of those skilled in the art.
Impermeable composite geomembrane of the present invention construction joining method is specially adapted to not have the antiseepage construction splicing of the composite geo-membrane of reserving edge fit, said nothing reserve edge fit be meant in the plant produced or in work progress after the cutting nonwoven do not have the edge fit that separates with film.
Beneficial effect of the present invention: (1) adopts the angle grinding machine to drive the round steel brush or wire wheel is removed the nonwoven on edge fit surface, and effective, efficient is high; (2) after the nonwoven on edge fit surface is removed, help the surface that bonding adhesive is penetrated into film, bonding after, do not have leakage passage, improve anti-seepage effect, reduced the consumption of bonding adhesive simultaneously; (3) bonding plane is no less than 1.5cm to the mother metal extension, has eliminated edge fit strength weak position, makes the edge fit adhesive shear strength reach strength of parent; Erose laying and composite geo-membrane defect repair when (4) being applicable to the impermeable composite geomembrane construction.
Description of drawings
Fig. 1: two cloth, one membranous type polyvinyl impermeable composite geomembrane construction connecting method sketch map;
Fig. 2: in the experiment of seepage, the splicing sketch map between big circular specimen and the small circular sample;
Wherein, 1-nonwoven, 2-polyvinyl antiseepage film; The 3-bonding adhesive, the big circular specimen of 4-, 5-circular hole; 6-small circular sample; W1 is meant the splicing width between the two polyvinyl antiseepage film light films, and W2 is meant the width that polyvinyl antiseepage film face extends to corresponding mother metal, and r is meant the radius of the circular hole that is positioned at big circular specimen middle position.
The specific embodiment
Below in conjunction with specific embodiment technical scheme of the present invention is done into a ground and introduce in detail, but protection scope of the present invention is not limited thereto:
Embodiment 1
Two cloth, one membranous type polyvinyl impermeable composite geomembrane construction connecting method sketch map as shown in Figure 1; Its splicing process is following: adopt the angle grinding machine to drive the nonwoven 1 that the round steel brush is removed two composite geo-membranes surface to be spliced respectively, expose the face of polyvinyl antiseepage film 2 and control the about 80g/m of residual volume of the film surface nonwoven of polyvinyl antiseepage film 2
2Two composite geo-membranes to be spliced are corresponding, location; Respectively at the face of face of two polyvinyl antiseepage film 2 to be spliced (being the splicing width W 1 between two polyvinyl antiseepage film, the 2 smooth films shown in Figure 1) and two polyvinyl antiseepage film 2 to be spliced extends position (being the width W 2 that face shown in Figure 1 extends to corresponding mother metal) from 1.5cm to corresponding mother metal; The 10 minutes even brushing twice bonding adhesive 3 in interval; After the second road gluing surface drying was tack-free, rubber hammer beat bonding, at last with about 5Kg sandbag pressurization 2 hours.In the work progress, the splicing width W of controlling between two polyvinyl antiseepage film, 2 faces 1 is 10cm; The liquid geomembrane glue that bonding adhesive 3 is produced for Chengdu Zhengguang Adhesive Co., Ltd.
Two cloth, one membranous type polyvinyl impermeable composite geomembrane construction connecting method sketch map as shown in Figure 1; Its splicing process is following: adopt the angle grinding machine to drive the nonwoven 1 that wire wheel is removed two composite geo-membranes surface to be spliced, expose the face of polyvinyl antiseepage film 2 and control the about 60g/m of residual volume of the film surface nonwoven of polyvinyl antiseepage film 2
2Two composite geo-membranes to be spliced are corresponding, location; Respectively at the face of face of two polyvinyl antiseepage film 2 to be spliced (being the splicing width W 1 between two polyvinyl antiseepage film, the 2 smooth films shown in Figure 1) and two polyvinyl antiseepage film 2 to be spliced extends position (being the width W 2 that face shown in Figure 1 extends to corresponding mother metal) from 2cm to corresponding mother metal; Evenly be coated with one deck bonding adhesive 3, bonding rapidly, and beat bonding with rubber hammer.In the work progress, the splicing width W of controlling between two polyvinyl antiseepage film, 2 faces 1 is 6cm; Bonding adhesive 3 is the KS hot melt adhesive that Henan water engineering material Co., Ltd produces.
Two cloth, one membranous type polyvinyl impermeable composite geomembrane construction connecting method sketch map as shown in Figure 1; Its splicing process is following: adopt the angle grinding machine to drive the nonwoven 1 that the round steel brush is removed two composite geo-membranes surface to be spliced, expose the face of polyvinyl antiseepage film 2 and control the about 20g/m of residual volume of the film surface nonwoven of polyvinyl antiseepage film 2
2Two composite geo-membranes to be spliced are corresponding, location; Respectively at the face of face of two polyvinyl antiseepage film 2 to be spliced (being the splicing width W 1 between two polyvinyl antiseepage film, the 2 smooth films shown in Figure 1) and polyvinyl antiseepage film 2 to be spliced extends position (being the width W 2 that face shown in Figure 1 extends to corresponding mother metal) from 5cm to corresponding mother metal; Evenly be coated with one deck bonding adhesive 3, bonding rapidly, and the pressure that tramps with one's feet is bonding.In the work progress, the splicing width W of controlling between two polyvinyl antiseepage film, 2 faces 1 is 5cm; Bonding adhesive 3 is the KS hot melt adhesive that Henan water engineering material Co., Ltd produces.
Performance test
The bonding composite geo-membrane adhesive effect test of hot melt adhesive
The KS hot melt adhesive that bonding adhesive selects for use Henan water engineering material Co., Ltd to produce, by impermeable composite geomembrane construction joining method of the present invention construction, details are as follows for process of the test, data and result:
(1) tension test
Test method: with reference to standard GB/T 15788-2005 " wide tension test of geotextiles and relevant product thereof ".
Experimental material and test conditions: two cloth, one membranous type polyvinyl composite geo-membrane, the film surface is a continuous yarn non-woven fabrics, the wide 20cm of test specimen bar, single face nonwoven weight 200g/m
2, thickness 0.3mm; Folder is apart from 25cm, draw speed 50mm/min, cross directional stretch.
Result of the test:
| Splicing width (cm) | Hot strength (kN/m) | |
| 5+0×2 | 11.05 | Mosaic face is terminal disconnected |
| 5+1×2 | 14.54 | Mosaic face is terminal disconnected |
| 5+1.4×2 | 16.46 | Mosaic face is terminal disconnected |
| 5+1.8×2 | 16.85 | The anchor clamps place is disconnected |
| 5+2×2 | 18.60 | Mother metal is disconnected |
| 5+3×2 | 18.85 | Mother metal is disconnected |
| Mother metal | 18.84 | Mother metal is disconnected |
Remarks: the width W 2 that the splicing width W 1+2 * polyvinyl antiseepage film face between splicing width=two polyvinyl antiseepage film light films extends to corresponding mother metal
Can find out that from this table impermeable composite geomembrane construction joining method of the present invention has been eliminated edge fit strength weak position, along with bonding face increases to the mother metal extension width, the edge fit adhesive shear strength progressively improves until reaching strength of parent.
(2) experiment of seepage
Experimental material: two cloth, one membranous type polyvinyl composite geo-membrane, the film surface is a continuous yarn non-woven fabrics.
Test method: with reference to standard GB/T19979.1-2005 " geosynthetics barrier performance part 1: the mensuration of resistance to hydrostatic pressure "; The difference of experiment of seepage of the present invention and this standard is in the making of sample; See that specifically Test Example a, reference examples b are said, and other operating procedure in the process of the test, method, value condition all keeps identical with standard as a result.
Test Example a:
The preparation process of sample is as shown in Figure 2, and details are as follows:
(i), the big circular specimen 4 of preparation: three big circular specimens 4 of clip at least from the mother metal sample; Its size is fit to employed instrument; And determine the circular hole 5 of a radius (r) 0.5cm in the central authorities of this big circular specimen 4, and be the center with the center of circle of circular hole 5, be radius with 0.5cm (r)+5cm (W1); Marked region, nonwoven to the residual volume that adopts the angle grinding machine to drive big circular specimen 4 surfaces in the round steel brush removing marked region is about 80g/m
2
(ii), preparation small circular sample 6: clip and splicing width and the corresponding small circular sample 6 of extension width from the used mother metal sample again; Be radius cutting small circular sample 6 with 0.5cm (r)+5cm (W1)+1.5cm (W2)=7cm in this example, adopt the angle grinding machine to drive the round steel brush and the nonwoven on whole small circular sample 6 surfaces are removed to residual volume be about 80g/m
2
(iii), respectively in position (being annular region shown in the W1) that big circular specimen 4 and 6 liang of light films of small circular sample splice mutually and small circular sample 6 faces to extending part (being annular region shown in the W2) coating adhesive of big circular specimen 4 mother metals; The center of circle that makes small circular sample 6 coincides with the center of circle of the circular hole 5 of big circular specimen 4; Promptly process Test Example sample after the pressurized adhesion by the inventive method splicing; Carry out experiment of seepage by standard; With the per hour differential pressurization step by step of 0.1Mpa, every grade all kept one hour, and added to the 0.6MPa leakproof.
Reference examples b:
The preparation process of sample is as shown in Figure 2, does not promptly remove great circle shape sample 4 nonwoven surperficial with small circular sample 6 edge fits, and details are as follows:
(i), the big circular specimen 4 of preparation: three big circular specimens 4 of clip at least from the mother metal sample, its size is fit to employed instrument, and determines the circular hole 5 of a radius (r) 0.5cm in the central authorities of this big circular specimen 4;
(ii), preparation small circular sample 6: clip and splicing width and the corresponding small circular sample 6 of extension width from the used mother metal sample again are radius cutting small circular sample 6 with 0.5cm (r)+5cm (W1)+1.5cm (W2)=7cm in this example;
Position (being annular region shown in W1 and the W2) coating adhesive that (iii), splices mutually at big circular specimen 4 and 6 liang of films of small circular sample respectively; The center of circle that makes small circular sample 6 coincides with the center of circle of the circular hole 5 of big circular specimen 4; Promptly process the reference examples sample of Test Example a after the pressurized adhesion; Carry out experiment of seepage by standard, be forced into 0.08Mpa seepage takes place.
Can know from above-mentioned experiment of seepage result: according to impermeable composite geomembrane construction joining method of the present invention splicing, select hot-melt adhesive for use, improved anti-seepage effect greatly.
The bonding composite geo-membrane adhesive effect test of liquid-type bonding adhesive
The liquid geomembrane glue that bonding adhesive selects for use Chengdu Zhengguang Adhesive Co., Ltd to produce, by impermeable composite geomembrane construction joining method of the present invention construction, details are as follows for test method, data and result:
(1) tension test
Test method, material, condition are all identical with " tension test " of " the bonding composite geo-membrane adhesive effect test of hot melt adhesive ".
Result of the test:
| Splicing width (cm) | Hot strength (kN/m) | |
| 5+0×2 | 13.08 | Mosaic face is terminal disconnected |
| 5+1×2 | 15.14 | Mosaic face is terminal disconnected |
| 5+1.4×2 | 16.43 | The anchor clamps place is disconnected |
| 5+1.8×2 | 17.28 | The anchor clamps place is disconnected |
| 5+2×2 | 18.27 | Mother metal is disconnected |
| 5+3×2 | 18.74 | Mother metal is disconnected |
| Mother metal | 18.76 | Mother metal is disconnected |
Remarks: the width W 2 that the splicing width W 1+2 * polyvinyl antiseepage film face between splicing width=two polyvinyl antiseepage film light films extends to corresponding mother metal
Can find out that from this table impermeable composite geomembrane construction joining method of the present invention has been eliminated edge fit strength weak position, along with face increases to the mother metal extension width, the edge fit adhesive shear strength progressively improves until reaching strength of parent.
(2) experiment of seepage
Test method is identical with " experiment of seepage " of " the bonding composite geo-membrane adhesive effect test of hot melt adhesive ".
Test Example a:
The preparation process of sample is as shown in Figure 2, and details are as follows:
(i), the big circular specimen 4 of preparation: three big circular specimens of clip at least from the mother metal sample; Its size is fit to employed instrument; And determine the circular hole 5 of a radius (r) 0.5cm in the central authorities of this big circular specimen 4, and be the center with the center of circle of circular hole 5, be radius with 0.5cm (r)+5cm (W1); Marked region, nonwoven to the residual volumes that adopt the angle grinding machine to drive big circular specimen 4 surfaces in the wire wheel removing marked region are about 60g/m
2
(ii), preparation small circular sample 6: clip and splicing width and the corresponding small circular sample 6 of extension width from the used mother metal sample again; Be radius cutting small circular sample 6 with 0.5cm (r)+5cm (W1)+1.5cm (W2)=7cm in this example, adopt the angle grinding machine to drive wire wheel and the nonwoven on whole small circular sample 6 surfaces are removed to residual volume be about 60g/m
2
(iii), respectively in position (being annular region shown in the W1) that big circular specimen 4 and 6 liang of light films of small circular sample splice mutually and small circular sample 6 faces to extending part (being annular region shown in the W2) coating adhesive of big circular specimen 4 mother metals; The center of circle that makes small circular sample 6 coincides with the center of circle of the circular hole 5 of big circular specimen 4; Promptly process Test Example sample after the pressurized adhesion by the inventive method splicing; Carry out experiment of seepage by standard; With the per hour differential pressurization step by step of 0.1Mpa, every grade all kept one hour, and added to the 0.6MPa leakproof.
Reference examples b:
The preparation process of sample is as shown in Figure 2, does not promptly remove great circle shape sample 4 nonwoven surperficial with small circular sample 6 edge fits, and details are as follows:
(i), the big circular specimen 4 of preparation: three big circular specimens of clip at least from the mother metal sample, its size is fit to employed instrument, and determines the circular hole 5 of a radius (r) 0.5cm in the central authorities of this big circular specimen 4;
(ii), preparation small circular sample 6: clip and splicing width and the corresponding small circular sample 6 of extension width from the used mother metal sample again are radius cutting small circular sample 6 with 0.5cm (r)+5cm (W1)+1.5cm (W2)=7cm in this example;
Position (being annular region shown in W1 and the W2) coating adhesive that (iii), splices mutually at big circular specimen 4 and 6 liang of films of small circular sample respectively; The center of circle that makes small circular sample 6 coincides with the center of circle of the circular hole 5 of big circular specimen 4; Promptly process the reference examples of Test Example a after the pressurized adhesion; Carry out experiment of seepage by standard, be forced into 0.06Mpa seepage takes place.
Can know from above-mentioned experiment of seepage result: according to impermeable composite geomembrane construction joining method of the present invention splicing, select the liquid-type bonding adhesive for use, improved anti-seepage effect greatly.
Claims (5)
1. an impermeable composite geomembrane construction joining method is characterized in that: adopt angle grinding machine drive round steel brush or wire wheel to remove surperficial nonwoven to the nonwoven residual volume of composite geo-membrane to be spliced and be not more than 80g/m
2, expose face, respectively between two faces to be spliced and two faces to be spliced extend the position coating adhesive of 1.5 ~ 5cm to corresponding mother metal, the splicing width of controlling between the two smooth films is 5 ~ 10cm, pressurized adhesion.
2. impermeable composite geomembrane construction joining method according to claim 1, it is characterized in that: composite geo-membrane is the polyvinyl composite geo-membrane.
3. impermeable composite geomembrane construction joining method according to claim 2, it is characterized in that: the polyvinyl composite geo-membrane is two cloth, one membranous types.
4. impermeable composite geomembrane construction joining method according to claim 1, it is characterized in that: bonding adhesive is liquid-type bonding adhesive or hot-melt adhesive.
5. impermeable composite geomembrane according to claim 1 construction joining method is characterized in that: pressurization is to beat or tramp with one's feet or pressurize with sandbag with rubber hammer.
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| CN109183854A (en) * | 2018-11-06 | 2019-01-11 | 北京高能时代环境技术股份有限公司 | The construction method of geomembrane |
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| CN106437603B (en) * | 2015-08-09 | 2018-11-02 | 阜新贝格科技有限公司 | Resin hole packer |
| CN105133545B (en) * | 2015-09-25 | 2016-11-30 | 河南省水利科学研究院 | Composite geo-membrane edge fit surface eedle-punched non-wovens fiber removes machine and scavenging system |
| CN106087875B (en) * | 2016-06-24 | 2018-05-04 | 崔建中 | River levee nanofiber waterproof membrane |
| CN111074952A (en) * | 2020-01-03 | 2020-04-28 | 北京高能时代环境技术股份有限公司 | Connecting structure between HDPE geomembrane and irregular rod piece and construction method |
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Inventor after: Jiang Xuexing Inventor after: Bian Ke Inventor after: Zhao Yuliang Inventor after: Li Zisheng Inventor after: Ma Hongjun Inventor after: Liu Xiaowei Inventor after: Ji Ruoyu Inventor after: Hou Xinyu Inventor after: Zhou Lixuan Inventor after: Yang Heizong Inventor after: Lei Cunwei Inventor after: Li Cuiling Inventor after: Li Huxing Inventor after: Si Majun Inventor after: Li Juan Inventor after: Cui Guoming Inventor after: Yin Xiangdong Inventor after: Lv Jun Inventor before: Jiang Xuexing Inventor before: Ji Ruoyu Inventor before: Hou Xinyu Inventor before: Zhou Lixuan Inventor before: Yang Heizong Inventor before: Lei Cunwei Inventor before: Li Cuiling Inventor before: Cui Guoming Inventor before: Yin Xiangdong Inventor before: Lv Jun Inventor before: Bian Ke Inventor before: Ma Hongjun Inventor before: Liu Xiaowei |
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Free format text: CORRECT: INVENTOR; FROM: JIANG XUEXING LEI CUNWEI LI CUILING CUI GUOMING YIN XIANGDONG LV JUN BIAN KE MA HONGJUN LIU XIAOWEI JI RUOYU HOU XINYU ZHOU LIXUAN YANG HEIZONG TO: JIANG XUEXING LEI CUNWEI LI CUILING LI HUXING SI MAJUN LI JUAN CUI GUOMING YIN XIANGDONG LV JUN BIAN KE ZHAO YULIANG LI ZISHENG MA HONGJUN LIU XIAOWEI JI RUOYU HOU XINYU ZHOU LIXUAN YANG HEIZONG |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20190901 |